Armature securing and centering means



July 26, 1927.

I M. R. CAMORS ARMATURE} SECURI-NG AND-CENTERING MEANS Filed NOV. 29, 1926 Patented July 26, 1927.

UNITED STATES HARCEL R. CAMORS, OF NEW ORLEANS, LOUISIANA.

ARMATURE SECURING AND CENTERING MEANS.

Application filed November 29, 1926. Serial No. 151,579.

This invention relates to improvements in armature securing and centering means and adapted for use in connection with the ordinary armature core or sleeve combined with 6 the shaft of a typical steam turbo-generator as well as electric .motor or electric generators as generally used.

Heretofore it has been the practice, in using small turbine driven generators on in steam locomotives, to secure the armature thereof on-the shaft of the turbine through the intermediary of a brass sleeve, said sleeve being held in a fixed position by means of a pin passing through the motor shaft and held within the slotted end of the armature sleeve or tube, the other end of said sleeve being engaged by a movable spring-tensioned washer, secured by a movable flanged collar the latter being held in place by a ball or roller bearing and a threaded nut fitted to the end of said motor shaft.

The defects and disadvantages of such an arrangement are evidenced by a loose armature due to the constant wear on the brass tube or sleeve which results in a wobbling armature assuming a somewhat eccentric motion. sary to remove said armature from the core or sleeve causing great loss and inconven- 3 ience.

Primarily it is the object of the present invention to cure the above defects by embodying means for mechanically securing the armature sleeve in place in such a manner that same will automatically assume a central or true position with respect to the shaft.

Another object of my invention is to provide a simple and inexpensive means for replacing worn armature sleeves on the original motor shaft so that the same will be securely held in a central fixed position, thereby obviating the necessity of re-wiring the armature and renewing the sleeve.

Another object of the invention resides in the provision of means for replacing the typical spiral spring and slip collar arrangementfor holding the armature sleeve in place, said means embodying a nut threadedly engaging the tapered cone collar contiguous to the concave end of the armature sleeve.

With these objects in view, together with others which will appear as the description proceeds, the invention resides in the novel formation, combination, and arrangement of It then obviously becomes neces-' parts, all as will be described more fully hereinafter, illustrated in the drawings, and particularly pointed out in the claims.

In said drawings:

Figure 1 illustrates a longitudinal central sectional view of my invention as applied to a combined motor and turbine impeller shaft.

Fig. 2 is a slightly modified form of the same.

3 is a rear elevation of a conical washer.

Fig. 4 is a side elevation of the same.

Fig. 5 is a front elevation of a slightly modified form of washer; and

Fig. 6 is a side elevation of another slightly modified form of washer.

Referring specifically now to the accompanying drawings, wherein like characters of reference denotesimilar parts throughout the several views, let 1 denote the motor shaft, which is of well-known construction, said shaft having its end tapered, as indicated at 2, for the reception of a turbine impeller, (not shown) through the intermediary of a key, or similar device, mounted in a keyway 3.

To said shaft 1 is mounted the armature 4, as diagrammatically indicated in Fig. 1, there being interposed therebetween a sleeve or tube 5, the latter having its inner end diametrically slotted, as indicated at 6 for the reception of a pin 7 passing bodily through an aperture 8 in said shaft. As shown in Fig. 2, said shaft 1 is preferably shouldered, as at 9 to receive the abutting end of said sleeve.

The other end, or more properly, the outer end, of said sleeve 1 is threaded, as indicated at 10 for the reception of a nut 12, while its face portion is conically recessed, as indicated at 13, for engagement with a similarly disposed conical projection 14 on the washer 15.

I now direct particular attention to the construct-ion of the washer 15, with special reference to Figs. 1, 3 and 4 of the drawings, wherein. it will be observed that I have provided same with a cylindrical body portion 16 and a circumferential flange 17 intermediate of said body portion and said conical projection 14:, the purpose and function of which will presently appear.

From the foregoing it is apparent that the 110 interengagement of the conical projection of the washer with the conical recess 13 of the sleevej iiirii'ilj' secures the latter in alined axlalrelationship'witli the shaft 1 and n order to effect a constant engagement of said projection and said recess I provide a helical spring 18, one end thereof encircling the body portion 16 of said avasher and abutting the flange 17, whileits other end engages a movable collar 19 held in place by-iiieansof an ordinary ball thrustof vcll-l tnown construction.

In'the other form shown in Fig. 2 one end otitlie shaft 1 is secured to the steam turbine impeller by means ofthetaperedj end 20 behring'a keyway 21, similar to the other formi} In addition to this said shaft is threaded, as indicated at 22, and is provided with a bearing extension 23, whilethe other type illustrated-in Fig.1, with the exception that saidshaft is threaded as lllCllCiltGf at 24; to receive a washer 26 having its aperturesiinilarly threaded, asshowninFig. 5, andtlius positive 'means is provided for respect to the shaft.

holding tl esleeve in acentral position with It will he understood, of course, thatin Fig. 2 only is retracted to clearly show the conical "pro- 1 jeetion of the washer 26- andconical recess of the sleeve, both of which are identical with the other form. 'If desired, I may provide said washer 26'; with a hexagonal body porfft-ioii 97, as shown in Fig; 6, to effect e:

that the washer is arranged with a conical and ra iid application and removal thereof,

heoperation oi: the device is simple n projection to theconical recess of the armature sleeve 5 slides said washer is forced 'inwardly and engages the recess of the sleeve,

the latter assumes a true i central position i with the'motor'or turbine shaft, causing same to rotate in a true circle thereliiy avoidng any ECCGIllAl CT-II IOiZlO D and securing the tomakequiclcand effective repairs to the ,armaturefi in true position.

The use of my invention will ell'ect, great savings and loss .of time, since it is possl le present constructions, and in the event my improvement is used at the factory during '7 the, primal construction work, parts can rid of said shaft is formed similar to the portion ot" .the sleeve 5 is shown and that the washer 3 readily be replaced withon'tiresort tothc use aiid arrangement of 'partsniaj; be resorted to without departing from the spirit of the invention as defined in the appended claims.

I "claim; a

1. The combinationuvith a combined an mature and generator or motor shaft having a transverseapertiire therein, eta tubular member having one end slotted to aline with the aperture in said shafhthe other end of vsaid member presenting a conical reccss'aud a spring-tensioned element having a conical pro ection and adapted .to constantly abut saidconical recess for centering said tubular member on said shaft.

' '2. T he combination with an, armature and generator or motor shaft having a transverse aperture therein, of a tubular member encircling said shaft and having onetif its ends provided with diametric open-end shits,

a pin adapted to engage sa dhtubular incur her to said shaft and a spring-,tcnsioned element presenting a conical projection and adapted to constantly abut a conical recessin the other end ofsaid tubular memberto center the latter about said sha'it.

3. The combination with an armature and generator or motor shaft having a, transverse aperture therein, of aztubular member eiieircling said shaitt and having one of its ends provided with diametric opeirend slots,

ajpin fitting into said slots and engaging said member to said shaft, the other end oi said tubular member presenting a conical recess and a sprlng-tensioned element having a circumferential flange andaconicalprojection, said projection being constantly.

urged into contact with the conical recess to center said member about said shaft.

-In testimony whereof I afiix my signature MARCEL R. OAMORS. 

